IELTS Anvil

nocturnal

CEFR: C1

Occurring, active, or done during the hours of night rather than the daytime (contrasted with diurnal).

Synonyms

night-active
crepuscular

Common Collocations

nocturnal animal
nocturnal habits
strictly nocturnal

Example Sentence

Many songbirds undertake nocturnal migration to avoid diurnal birds of prey and take advantage of calmer night air.

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